Ideas for a Demostration bot

[Stephen of REX]

Hello, my team may soon be building a separate robot for demonstrations to the public. We are doing this because our other robots, for Overdrive and Lunacy, don't really have a "wow" factor to entertain the public. We used to use our Aim High robot, because kids loved trying to catch flying poof balls.

So the basic idea is to have a vaguely humanoid robot. It would have two "legs", with two wheels each, hopefully all terrain. Other than that, one arm may be a pneumatic catapult, while the other will be an air cannon. The air cannon is actually already built. The "head" would be two compressors.

So I guess I am asking for input and any additional ideas you guys can come up with. Thanks in advance!